package org.example.volunteerend.utils;

import java.io.InputStream;

import com.aliyun.oss.ClientException;
import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.OSSException;
import com.aliyun.oss.model.PutObjectRequest;
import com.aliyun.oss.model.PutObjectResult;

/**
 * 阿里云OSS工具类
 */
public class AliOssUtil {
    // Endpoint以杭州为例
    private static final String ENDPOINT = "oss-cn-beijing.aliyuncs.com";
    private static final String ACCESS_KEY_ID = "LTAI5tGqvPzYNyAGog57X4wn";
    private static final String ACCESS_KEY_SECRET = "zN42jILUlqvnK227jmiwZU5hewmFXF";
    private static final String BUCKET_NAME = "mydatabasework";
    
    /**
     * 文件上传
     * @param objectName 对象名称
     * @param inputStream 输入流
     * @return 文件访问路径
     */
    public static String uploadFile(String objectName, InputStream inputStream) throws Exception {
        // 创建OSSClient实例
        OSS ossClient = new OSSClientBuilder().build(ENDPOINT, ACCESS_KEY_ID, ACCESS_KEY_SECRET);
        
        String url = "";
        
        try {
            // 创建PutObjectRequest对象
            PutObjectRequest putObjectRequest = new PutObjectRequest(BUCKET_NAME, objectName, inputStream);
            
            // 上传文件
            PutObjectResult result = ossClient.putObject(putObjectRequest);
            
            // 构建文件访问路径并返回
            url = "https://" + BUCKET_NAME + "." + ENDPOINT + "/" + objectName;
            
        } catch (OSSException oe) {
            System.out.println("Caught an OSSException, which means your request made it to OSS, "
                    + "but was rejected with an error response for some reason.");
            System.out.println("Error Message:" + oe.getErrorMessage());
            System.out.println("Error Code:" + oe.getErrorCode());
            System.out.println("Request ID:" + oe.getRequestId());
            System.out.println("Host ID:" + oe.getHostId());
            throw oe;
        } catch (ClientException ce) {
            System.out.println("Caught an ClientException, which means the client encountered "
                    + "a serious internal problem while trying to communicate with OSS, "
                    + "such as not being able to access the network.");
            System.out.println("Error Message:" + ce.getMessage());
            throw ce;
        } finally {
            if (ossClient != null) {
                ossClient.shutdown();
            }
        }
        
        return url;
    }
} 